For classical music I would suggest also that you go to a used bookstore and find an old Penguin Guide, old enough so that most of its recommendations are in vinyl. It will not cost much. It’s not the last word on performance or sound, but it is a very good beginning.
You could also check out the good sounding vinyl record lists at the Absolute Sound’s Super LP List, at Arthur Salvatore’s high-endaudio.com and at Stereophile’s annual R2D4 posted on its web site.